Water once a day for a week, then every other day for a week, then twice a week, then once a week. Should be established enough by then to be on its own. Don't water if we get a huge rain, or if it's getting hit by your sprinklers. Palms like water and heat, but HATE wet feet. Soil should be drying out on the surface between waterings.

A month from now get a palm fertilizer, and follow the instructions. I usually go a little light on the fertilizer, because everything seems to get fertilizer burn easy down here.